Improvement in flue-cleaners



, A. CRDSBY.

Flue-Cleaners.

Patented Nov. 3,1874. 7

Vim 156,543.

Inventor Witnesss v THE GRAPHIC coyudro-Lnmasan PARK PLACEJLY- UNITEDSTATES PATEN ADDISON CROSBY, OF NEW YORK, N. Y.

IMPROVEMENT IN FLUE-CLEANERS.

Specification forming part of Letters Patent No. 156,543, dated November3, 1874; application filed September 22. 1874.

To all whom it may concern:

Be it known that I, ADDISON ORosBY, of New York city, N. 31., haveinvented certain new and useful Improvements in Flue-Gleam ers; and I dohereby declare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawings making a partof this specification.

This invention relates to that class of fluecleaners (for cleaning thefire-fines of boilers) in which a jet of steam is thrown into a movablepipe to be applied to each flue, so as to create a vacuum-draft, whichdraws out the soot from the open flue, and may be considered as animprovement on the flue-cleaner described in N. W. Wheelers patent of1865.

In the drawings similar letters refer to like parts.

Figure 1 is a side elevation; Fig. 2, a vertical section, showing theinstrument applied to a flue, but not in action. Figs. 3, 4, 5, 6,.and 7are details.

B represents a section of a boiler, and F a section of a flue. O is adouble reducing-nozzle of cast metal. The mouth m, which is applied toand over the flue to be cleaned, is faced with a rubber ring, a, and isof the full diameter of the fluesay, four inches. The dischargemouth (1is about two inches diameter, being a reduction as one to four from thediameter of the fluemouth m. This reduction greatly increases the powerof the draft." I is a reducing injector-pipe, being about three-quartersof an inch in diameter at its butt, where it is screwed into thesteam-mouth s of the redneingnozzle, and being about half an inch at itsnozzle, which discharges its jet of steam about two inches within thedischarge-mouth d. I prefer that this should be a reducing-pipe, but thereduction is not indispensable. E is a pipe some two or three feet longand about three-quarters of an inch diameter, and is screwed to thenozzle at its mouth vs. This pipe is surrounded by a wooden jacket, 0,so that it may be used as a handle in applying the instrument. W is anangle valve-seat screwed to the other end of pipe E, and is providedwith a spring-valve, V, which controls the admission of steam to pipe E.N is a screwnozzle secured to seat W, for the attachment of thethree-quarter-inch flexible steam-hose S. H is a stirrup-handle attachedto seat W for convenience in applying the instrument. G is agripe-lever, pivoted at one end to stirrup H and in the middle to thevalve-rod r, so that the hand of the operator, whil'e grasping handle H,may also gripe lever G, and thus admit the steam.

The operation is as follows: Pipe S is attached to a steam-nozzle of theboiler. The, mouth at is then applied over the fine to be cleaned, andpressed against it so as to make a joint. By griping lever G the valve Vis opened, and a jet of steam is admitted which rushes through pipe Eand injector I, into and out of dischargemouth 01, thereby creating avacuum, (the power of which is intensified by reduction,) whichpowerfully draws a current of air through the open flue, thus clearingout its soot and other injurious contents.

The chief feature of my invention consists in having the discharge-mouthd of a muchreduced area, as compared with the fluemouth.

Instead of taking in the steam, as shown, at an angle to the line ofdischarge, it is possible to take it in a direct line from the boiler atpoint marked :10, and the same result will ensue.

I claim 1. The combination of the stirrupvalve G V, steam-jet I, bentnozzle 0, constructed and operating substantially as set forth.

2. The combination of stirrup H, lever G, valve V, valve-seat W, rod 4",and spring 0, substantiallyas set forth.

3. The valve-seat W, in combination with stirrup H and pipe E,substantially as set forth.

Witness my hand this 29th day of July, 1874..

ADDISON CROSBY.

